LTM4657 datasheet(4/28 Pages) AD

4 / 28 page

LTM4657

Rev. A

For more information www.analog.com

TYPICAL PERFORMANCE CHARACTERISTICS

1V Output Transient Response

3.3V Output Transient Response

1.5V Output Transient Response

5V Output Transient Response

2.5V Output Transient Response

Efficiency vs Load Current

from 3.3VIN

Efficiency vs Load Current

from 5VIN

Efficiency vs Load Current

from 12VIN

OUTPUT LOAD CURRENT (A)

100

4657 G01

3.3VIN, 1VOUT, 500kHz

3.3VIN, 1.5VOUT, 650kHz

3.3VIN, 2.5VOUT, 800kHz

OUTPUT LOAD CURRENT (A)

100

4657 G02

5VIN, 1VOUT, 500kHz

5VIN, 1.5VOUT, 650kHz

5VIN, 2.5VOUT, 800kHz

5VIN, 3.3VOUT, 1000kHz

OUTPUT LOAD CURRENT (A)

100

4657 G03

12VIN, 1VOUT, 500kHz

12VIN, 1.5VOUT, 650kHz

12VIN, 2.5VOUT, 800kHz

12VIN, 3.3VOUT, 1000kHz

12VIN, 5VOUT, 1250kHz

100µs/DIV

VIN = 12V, VOUT = 1V, fSW = 500kHz,

COUT = 2× 100µF + 22µF CERAMIC CAP;

COMPa = COMPb

CFF = 100pF

OUTPUT

VOLTAGE

50mV/DIV

LOAD

CURRENT

1A/DIV

4657 G04

100µs/DIV

VIN = 12V, VOUT = 1.5V, fSW = 650kHz,

COUT = 2× 100µF + 22µF CERAMIC CAP;

COMPa = COMPb

CFF = 100pF

OUTPUT

VOLTAGE

50mV/DIV

LOAD

CURRENT

1A/DIV

4657 G05

100µs/DIV

VIN = 12V, VOUT = 2.5V, fSW = 800kHz,

COUT = 2× 100µF + 22µF CERAMIC CAP;

COMPa = COMPb

CFF = 100pF

OUTPUT

VOLTAGE

50mV/DIV

LOAD

CURRENT

1A/DIV

4657 G06

100µs/DIV

VIN = 12V, VOUT = 3.3V, fSW = 1000kHz,

COUT = 2× 100µF + 22µF CERAMIC CAP;

COMPa = COMPb

CFF = 100pF

OUTPUT

VOLTAGE

50mV/DIV

LOAD

CURRENT

1A/DIV

4657 G07

100µs/DIV

VIN = 12V, VOUT = 5V, fSW = 1250kHz,

COUT = 2× 100µF + 22µF CERAMIC CAP;

COMPa = COMPb

CFF = 100pF

OUTPUT

VOLTAGE

50mV/DIV

LOAD

CURRENT

1A/DIV

4657 G08

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